Eastern Pacific · Costa Rica
Cocos Island
Essentials
- Dive difficulty
- Advanced
- Best months
- Jun – Nov
- Access
- Liveaboard required
- 2 documented liveaboard itineraries · no confirmed departure
- Experience & eligibility
- Deep Diver specialty recommended
- 1 of 1 sites
Wildlife
Documented presence, never a guaranteed sighting.
Whale Shark — see destinations where it is seen
Rhincodon typus
Whitetip Reef Shark — see destinations where it is seen
Triaenodon obesus
Dive sites
Bajo Alcyone
- Depth : 24–35m
- Dive type : Pelagic / blue water
- Access : Liveaboard only · Liveaboard required
- Current : Strong
Main wildlife : Scalloped Hammerhead Shark
Deep Diver specialty recommended
A submerged seamount known for hammerhead schooling.
View in SearchWhen to go
Choose a month
Documented best months
Conditions in Jun
Water27–29°C
VisibilityNot documented
CurrentNot documented
In season this month: Scalloped Hammerhead Shark, Whitetip Reef Shark
Water temperature: NOAA OISST satellite sea-surface normals (2020–2024, typical range for the month). It can be cooler at depth or below a thermocline — check with your operator for exposure protection.
Experience & eligibility
- Recommended
Deep Diver specialty
Site concerned (1/1): Bajo Alcyone
A required level is a floor: a more experienced diver always qualifies.
How to dive here
Real dive operators and their published trip options for this destination — DiveFinder does not sell or book these; continue on the operator's own site.
10-Night Cocos Island Expedition (Argo)
Undersea Hunter · Liveaboard operator
Price not published
package price
Fixed expedition10 nightsDeparts from PuntarenasVessel: Argo
Accommodation · IncludedDiving · IncludedFlights · Not includedNitrox · Included
Deep Diver specialty · recommended
Source: DiveFinder research from public listings — not yet verified with the operator
10-Night Cocos Island Expedition (Okeanos Aggressor)
Aggressor Adventures (Okeanos Aggressor) · Liveaboard operator
Price not published
package price
Fixed expedition10 nightsDeparts from Puntarenas
Accommodation · IncludedDiving · IncludedFlights · Not includedNitrox · Optional
Advanced Open Water · recommended
Source: DiveFinder research from public listings — not yet verified with the operator